Bottom sole



FIG. 1 is a side view of a bottom sole;

FIG. 2 is an opposite side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front perspective view thereof.

The color shown on the claimed design forms no part thereof. The portions of the designs highlighted in light gray are for the purpose of illustrating environment only and form no part of the claimed design. 

CLAIM The ornamental design for a bottom sole, as shown and described. 